Method, and base station

A method performed by a base station in a Non-Public Network, the method comprising:

• operating a closed access group (CAG) associated with a CAG having an associated CAG identifier;
• receiving, from a user equipment (UE) in the CAG cell a third message for resumption of a communication connection suspended in a CAG cell operated by a further base station;
• sending, to the further base station or a core network function, a first message indicating that the UE has requested resumption of the communication connection, the first message including the CAG identifier;
• and
• receiving, from the further base station or the core network function, a second message indicating a result of CAG membership verification for the CAG identified by the CAG identifier in the first message, the CAG membership verification being performed by the further base station or the core network function.

A base station for a Non-Public Network, the base station comprising:

• a controller;
• and
• a transceiver, wherein the controller is configured:
• to operate a closed access group (CAG) cell;
• to control the transceiver to establish a communication connection with a user equipment (UE) in the CAG cell, wherein the CAG cell is associated with a CAG having an associated CAG identifier;
• to control the transceiver to suspend the communication connection;
• to control the transceiver to receive, from a further base station, a first message indicating that the UE has requested resumption of the communication connection in a CAG cell operated by the further base station, the message including a CAG identifier of a CAG which the CAG cell operated by the further base station is associated with;
• to perform CAG membership verification for the CAG identified by the CAG identifier first message;
• and
• to control the transceiver to send, to the further base station, a further message indicating a result of the CAG membership verification.

A base station for a Non-Public Network, the base station comprising:

• a controller;
• and
• a transceiver, wherein the controller is configured:
• to operate at least one closed access group (CAG) associated with a CAG having an associated CAG identifier;
• to control the transceiver to receive, from a user equipment (UE) in the CAG cell, a third message for resumption of a communication connection suspended in a CAG cell operated by a further base station;
• to control the transceiver to send, to the further base station or a core network function, a first message indicating that the UE has requested resumption of the communication connection, the first message including the CAG identifier;
• and
• to control the transceiver to receive, from the further base station or the core network function, a second message indicating a result of CAG membership verification for the CAG identified by the CAG identifier in the first message, the CAG membership verification being performed by the further base station or the core network function.